clutch problem - GQ patrol

Post by **TinyGQ** » Wed Jan 18, 2006 11:46 am

I was wondering if anyone can help me find out the problem im having with my clutch. Recently, and i think its getting worse, the clutch pedal has been getting really low untill i cant use it anymore. I have to pump the pedal to make it hard again. once i do that it works perfectly agian. Im thinkin it must be something to do with the master cylinder?

Any help would be appreciated.

TinyGQ

Post by **MyGQ** » Wed Jan 18, 2006 12:57 pm

Sounds like the master cylinder has had the dick, though try bleeding the system first. see if there is air in it

Post by **matthewK** » Wed Jan 18, 2006 3:30 pm

yes its your master cylinder , i have the very same prblem as you iv been told to replace the hole thing they are around $150+

but i remember i had a guy from NZ who could get them for 58 bucks it al old post i had a long while back about 2 weeks on there

J Top is his nic give him a message see how u go

Post by **chops** » Wed Jan 18, 2006 9:45 pm

I concur!

I had the same dramas.. new clutch master cyl fixed it!

only downside is the cost.. the servo assisted ones are a tad more expensive than the non assisted ones

Post by **GQ4.8coilcab** » Thu Jan 19, 2006 11:48 am

when u do replace ure master cyl. and if yours is power assisted, mine was a pain in the but adjusting the power assisting settings. Even my mechanic had troubles.
cheers julian

Post by **legsx1** » Thu Jan 19, 2006 5:25 pm

You will more likely get a response to J.Top on the Mits section, as I know he checks that and the general section. His name is Carl - he is my mechanic here in Wellington/Lower Hutt - New Zealand

Post by **Daisy** » Thu Jan 19, 2006 6:24 pm

dunno what is it with you tiny and master cylinders for your brake AND clutch..

BTW.. i have both on ebay atm.. so check em out dude

Brake master cylinder

http://cgi.ebay.com.au/ws/eBayISAPI.dll ... %3AIT&rd=1

Clutch master cylinder

http://cgi.ebay.com.au/ws/eBayISAPI.dll ... %3AIT&rd=1

Hope that helps mate.

Cheers

Post by **TinyGQ** » Fri Jan 20, 2006 10:34 am

i know man!! everything is falling apart, i guess it gets a ruff time so its bound to happen!! at leat ill have a brand new car by the end of it lol

ill check your ebay listings.

i dunno about the power assisted thing, i have an 88 pov pack model so its probably not lol

cheers for your help everyone!

Post by **chops** » Fri Jan 20, 2006 5:50 pm

TinyGQ wrote:
i dunno about the power assisted thing, i have an 88 pov pack model so its probably not lol

According to the workshop manual I have, the 4.2 engines have booster assisted clutch, while the 3.0 engine does not

Post by **matthewK** » Fri Jan 20, 2006 6:49 pm

yes the 4.2 GQ 88 have a servo with vacume assistance
it what i got under the hood anyway

Post by **not not** » Sat Jan 21, 2006 8:50 am

So tell me why are you guys haveing trouble setting up the booster clutch master assembly or have i lost the plot here and misconstruded something
Also the suspect item could be the slave cylinder on the side of the gear box that operats the clutch fork?

Post by **TinyGQ** » Sun Jan 22, 2006 6:57 pm

well i just bought daisies clutch master cylynder off of ebay right after i read the stuff about the booster!! hopefully its the right one, doesnt really matter if its not cause i had already bought a power steering pump so the postage is the same plus im sure it will go soon enough if it already hasnt.

So how do i check whether its the slave cylinder on the side of the gearbox or if its the master cylinder???

TinyGQ

Post by **MyGQ** » Sun Jan 22, 2006 7:40 pm

TinyGQ wrote:well i just bought daisies clutch master cylynder off of ebay right after i read the stuff about the booster!! hopefully its the right one, doesnt really matter if its not cause i had already bought a power steering pump so the postage is the same plus im sure it will go soon enough if it already hasnt.

So how do i check whether its the slave cylinder on the side of the gearbox or if its the master cylinder???

TinyGQ

Best idea is to have a 2 mates check the setup. one watch the fluid level in the master cylinder, the other watch the slave cylinder

If your slave is dead, you will notice some of hte fluid dripping out of the slave unit, and when the clutch is depressed and released, you will see air bubbles in the master resivouir. The master Cylinder symptoms are what is described, having to pump the clutch pedal in order to get it working, as the seals are gone and the fluid is pushing past the seals. my brakes are showing this sign, and its got to be the master unit, as i have had the slaves checked out and they are all in 100% nick, going to put a heaver duty setup on, either the one from the EFI model automatic (they run a heavier pedal setup to compensate for the lack of engine breaking in the auto).

Post by **matthewK** » Sun Jan 22, 2006 7:42 pm

ah ya bugga u out bid me lol

try replaceing the old rubber inside see how u go

but first do your master cylinder see how things go

matt

Post by **TinyGQ** » Mon Jan 23, 2006 8:13 am

matthewK wrote:ah ya bugga u out bid me lol

try replaceing the old rubber inside see how u go

but first do your master cylinder see how things go

matt

sorry matt, i needed it! yea i think ill just put it on and see if my problem is gone, if the problem isnt gone ill let ya know and sell one of em too ya, hopefully for me it is though!

TinyGQ

Post by **TinyGQ** » Mon Jan 23, 2006 8:14 am

cheers MyGQ

Post by **matthewK** » Mon Jan 23, 2006 11:34 am

TinyGQ wrote:
matthewK wrote:ah ya bugga u out bid me lol

try replaceing the old rubber inside see how u go

but first do your master cylinder see how things go

matt
sorry matt, i needed it! yea i think ill just put it on and see if my problem is gone, if the problem isnt gone ill let ya know and sell one of em too ya, hopefully for me it is though!

TinyGQ

kind did to

i havent fix the problem yet
anyways let us all know

Post by **paazau** » Tue Jan 24, 2006 6:46 pm

I've just joined this group; I live in Adelaide, have 3 adult
children, and use my 4wd for towing my daughter's horses. I haven't
done any off-roading, but only for lack of time. I would love to!

My main reason for joining this group is I'm hoping to find some
information regarding the problem I'm having with my clutch. I have
a '92 Nissan Patrol, Diesel 4.2, manual (obviously). I've had the
master cylinder, slave cylinder, and now clutch plate replaced, and
I'm still having an issue. The point of engagement changes from when
I first start driving the vehicle, after I've driven for 5-10
minutes. The mechanics who have done the clutch work are at a loss to
explain this to me, and it's driving me crazy!!!! If anyone has any
experience with clutch problems, I would really appreciate any
suggestions or advice.

chops wrote:
According to the workshop manual I have, the 4.2 engines have booster assisted clutch, while the 3.0 engine does not.

Is it possible that this perhaps pertains to my problem??????
Thanks in advance for reading my post and helping if you can.

Post by **J Top** » Tue Jan 24, 2006 8:35 pm

You need to clarify your problem more.
Do you mean that the pedal gets higher and higher for the clutch to clear? this is called pumping up and is because the piston is not returning far enough to allow all the fluid to return to the resevoir. Adjust the push rod between the M/C and the Booster,or ,less likely, between the Pedal and Booster.
There is a 2nd bleed nipple on Patrols up by the fuel filter, left front guard.
Lastly, possible faulty hose, affected by exh heat?
J Top

Post by **paazau** » Tue Jan 24, 2006 8:50 pm

Thanks for your reply JTop. Sorry, I'm not sure what you mean by 'to clear'. When you release the clutch pedal when you first begin to drive, the gears engage at half-release. AFter 5-10 minutes of driving, when you release the pedal, the gear doesn't engage until the end of the release (at the top). make sense?? Hose from slave was replaced with slave (is that the hose you mean??)

You need to clarify your problem more.
Do you mean that the pedal gets higher and higher for the clutch to clear? this is called pumping up and is because the piston is not returning far enough to allow all the fluid to return to the resevoir. Adjust the push rod between the M/C and the Booster,or ,less likely, between the Pedal and Booster.
There is a 2nd bleed nipple on Patrols up by the fuel filter, left front guard.
Lastly, possible faulty hose, affected by exh heat?
J Top

Post by **matthewK** » Tue Jan 24, 2006 10:19 pm

try bleeding the clutch see how that works, also you can ajust the peddle to let it out more from the floor, this may help other then that all i can think of

as i have the 88 4.2GQ petrol and i dont have the second nipple on mine pritty much from master cylinder to slave

and i managed to get a mster cylinder too and fixed my clutch problem same prob as tinyGQ

and it was the problem to tiny

Post by **J Top** » Wed Jan 25, 2006 5:19 am

Those symtoms definately sound like booster to m/c clearance, reduce the push rod length on the booster, behind the m/c.
It is adjustable. Measure the depth of the recess in the back of the m/c and calculate the required length of push rod, taking into account the m/c sleeves into the booster.
J Top

Post by **paazau** » Wed Jan 25, 2006 7:45 am

Thanks so much for your assistance and suggestions JTop. I'm going to print all this out and take it to my mechanic today. On the way to work this morning, the clutch went from loose and having free play at the top of the release, and gears engaging smartly 2-3 inches from floor at startup, to the clutch being super stiff and gears engaging wimpily (is that a word??) and 1-2 inches from top of release, to the clutch being super loose with heaps of free play and the gears engaging smartly only an inch from the floor. If I don't get this sorted soon I'm gonna have someone's guts for garters!!!

shaz

Post by **paazau** » Wed Jan 25, 2006 7:51 am

Thanks for that suggestion matthewk. As I mentioned in my previous reply I'm heading to my mechanics' at lunchtime today with all these suggestions in hand to get this sorted once and for all.

I didn't realize you had the petrol model. Glad to hear you got your clutch all fixed up.

shaz

Post by **matthewK** » Wed Jan 25, 2006 5:39 pm

i replaced mine i still got to slight pump the clutch so i also thiunk its the servo/ boster between the pedal and servo anyways

matt

Post by **chops** » Wed Jan 25, 2006 5:50 pm

http://www.outerlimits4x4.com/PHP_Modul ... hp?t=65059

I think this might be the cause of some people's dramas

Post by **paazau** » Wed Jan 25, 2006 7:57 pm

Hmmmmm. Thanks TinyGQ. I'll see if I can get some more info from that guy. My mechanic is stumped - my Patrol doesn't have a booster it seems so that's not the problem. The place they got the clutch from said slave or master problem, but they've both been replaced. They also said it could be wear on the tongue but the gearbox would have to be pulled out again to check that so that'll be a last resort.

I'll p*** off now and leave you guys alone, but thanks heaps for all your advice and suggestions.

Post by **paazau** » Wed Jan 25, 2006 8:10 pm

Sorry that should have been "Thanks chops".

Post by **matthewK** » Wed Jan 25, 2006 11:20 pm

yeah read that post before and i got mine out of another petrol patrol
as my GQ is petrol,

at one stage somone said that there not much differance between GQ and most are interchanable only on some parts i would think

Post by **TinyGQ** » Mon Feb 06, 2006 10:30 am

hey everyone, just thought id reply and say that putting on the clutch master cylinder i bought from Daisy fixed the problem, she drives like new again, well not really but its not the clutches fault this time lol!!

cheers everyone, cheers Daisy

TinyGQ

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